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What does the negative sign in the expression `E_(Zn^(2+)//Zn)^(@)=-76` V mean?

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Negative sign for `E_(Zn^(2+)//Zn)^(@)` shows that zinc is more reactive than hydrogen. This means that when zinc electrode is connected to SHE, Znw will be oxidized to `Zn^(2+)` and `H^(+)` will be reduced to `H_(2)`.

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